Atoms and Elements Pages E40- E43. Atom Define: Parts of an atom: The basic unit of matter Nucleus - Center Protons - positive Neurons - neutral Electrons.

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Presentation transcript:

Atoms and Elements Pages E40- E43

Atom Define: Parts of an atom: The basic unit of matter Nucleus - Center Protons - positive Neurons - neutral Electrons - negative

Define: A substance made up of only 1 kind of atom. Periodic table: A chart that organizes elements by similar properties in order of increasing atomic number Element

Periodic Table

Closer look!

Molecules Define: Two or more atoms of the same element linked together

Compounds Define – a substance made of the atoms of two or more different elements Examples - Water = H2O or Salt = NaCl

Metals Elements are classified by their _________________, About ¼ of elements are nonmetals.

Properties of Metals Luster Ductile Malleability Conductor Insulator

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Ductile Definition: Example of an element that is ductile:

Malleable Define: What is an example of a malleable element?

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